/Engine/Source/Editor/PropertyEditor/Public/PropertyHandle.h
Sets a value on the specified object that this handle is editing
[FPropertyAccess::Result](API\Editor\PropertyEditor\FPropertyAccess__Result) SetPerObjectValue ( const int32 ObjectIndex, const [FString](API\Runtime\Core\Containers\FString) & ObjectValue, [EPropertyValueSetFlags::Type](API\Editor\PropertyEditor\Type) Flags )